Search  for anything...

toolant Gigantic Step Drill Bit(Pro Max), 1/4" - 2-1/2"(15 Step Size) Large Step Drill Bit, 1/2" Shank Unibit Step Drill Bit for Metal, Aluminum, Wood, Plastic

  • Based on 1,407 reviews
Condition: New
Checking for product changes

Buy Now, Pay Later


As low as $11.67 / mo
  • – 6-month term
  • – No impact on credit
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout. Payment plans are offered through our trusted finance partners Klarna, PayTomorrow, Affirm, Afterpay, Apple Pay, and PayPal. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product

This item is eligible for return within 30 days of receipt

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.


Availability: In Stock.
Fulfilled by Amazon

Arrives Wednesday, Dec 25
Order within 17 hours and 34 minutes
Available payment plans shown during checkout

Size: 1/4" - 2-1/2"


Features

  • WARRANTY - If you are not fully satisfied for any reason, please contact us for 100% refund or replacement.
  • STREAMLINED SIZE TRANSITION - Guarantees true smooth drilling of large holes.
  • TiAlN COATING- With 89HRC surface hardness, harder materials can be cut and higher cutting speeds can be achieved.
  • HSS STEP DRILL - Prefect for Metal Sheet/Wood/Plastic/Aluminum Sheet/Copper and other metal sheets.
  • DIMENSION - Includes 15 STEPS SIZE from 1/4" to 2-1/2". Replace a whole set of hole saw. No more suffering from drilling large holes

Material: High Speed Steel


Cutting Diameter: 2-1/2 Inches


Finish Type: Titanium Aluminum Nitride


Shank Type: Tri-Flat


Brand: AugTouf


Package Dimensions ‏ : ‎ 4.53 x 2.8 x 2.8 inches; 1.65 Pounds


Date First Available ‏ : ‎ April 11, 2023


Manufacturer ‏ : ‎ AugTouf


Best Sellers Rank: #1,756 in Industrial & Scientific (See Top 100 in Industrial & Scientific) #3 in Step Drill Bits


#3 in Step Drill Bits:


Customer Reviews: 4.5 4.5 out of 5 stars 1,407 ratings


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, Dec 25

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Drills through steel at high speed
Size: 1/4" - 3/4"
My husband used this to drill holes into 1/8” diamond plate steel and was completely impressed. Using cutting oil he was able to cut right through at high speed with no issues. A couple of points regarding some of the issues people had: he inserted the shaft nearly all the way into the drill to give it extra support and made sure to keep the drill absolutely straight the whole time. He did mention that it tried to hand up a couple of times, but he just stopped and restarted with no problem. It has such bite that it really wants to turn on an angle which is probably where people run into trouble with the shaft breaking. Overall, he’s thrilled with this bit ... show more
Reviewed in the United States on October 26, 2023 by Angela

  • 1/8 inch steel... No problem..
Size: 1/8" - 7/8" (3pcs Set)
These bits are awesome.. I drilled 8 holes with these bits... These holes had to be precise. These bits did the job...
Reviewed in the United States on November 25, 2023 by TJ Dawson

  • Extremely durable, amazing longevity
Size: 3/16" - 7/8"
I had one for a little over a year and use just about every day between copper and galvanized metals. Stayed sharp the whole time and never had any problems with it. Definitely worth the money and mine only broke cause my impact took a 15’ fall and landed right on it
Reviewed in the United States on October 29, 2023 by Thaddeus

  • It drills stainless steel like a piece of cake!
Size: 1/4" - 2-1/2"
Highly recommend for those needing hole up to 2” and above. Especially you are working on stainless steel sheet. Whether it’s your kitchen sink or any project, this unibit gets job done!!! It all began with I needed to punch a hole of 2” on a very think stainless steel sheet. My journey began with a smaller Irwin unibit and it did the job - till 1-3/8 size. That the biggest hole Irwin can go. I then figured out I needed a biggie hole. I ran to Homedepot and got a Milwaukee 2” bi-metal saw and used it with my WEN drill press. With plenty lubrication and careful low speed drilling, the 2” bi-metal eventually failed and ran out of its sharp teeth after 20 mins. I was very frustrated and tired. I ran to Homedepot again and found out there’s no bigger unibit than 1-3/8. Crazy! I started google and found out this giant unibit. I was very skeptical at beginning. But wow! The unibit is amazing! I enlarged 1-3/8 hole to 2” in less than 2mins! I didn’t even use WEN drill press, but a Milwaukee 18V wireless driller, and it did a fantastic job and FAST! Go get it! You wont be disappointed! Be careful when you use this unibit, the pushback power is very strong and can hurt you! Make sure you either use a drill press, or hold the drill with both hands tightly! ... show more
Reviewed in the United States on August 3, 2023 by up4 up4

  • Makes big pretty holes
Size: 1/4" - 2-1/2"
I recently replaced the gas fill on my car with a newton filler and needed to enlarge the hole. This worked perfect it is expensive, but you get what you pay for, and I haven't been able to find anything any bigger.
Reviewed in the United States on October 26, 2023 by Amazon Customer

  • Exceeded Expectations
Size: 3/16" - 7/8"
Easily drilled many holes of various size in the metal drum I was working on. Showed zero signs of wear afterward.
Reviewed in the United States on November 7, 2023 by Nick

  • Flat eats
Size: 1/4" - 3/4"
I've never had a step bit like this I've never seen anything eat like this step bit in my life I'm an automotive GPS installer we have to drill holes in material up to half inch thick doesn't even phase it I've had mine for over 6 months worth the money
Reviewed in the United States on October 21, 2023 by Marty Miller

  • 1/2 steel no problem.
Size: 1/4" - 3/4"
Drilled through 1/2 steel no problem. Started with a 1/4 inch pilot hole and it went through to 3/4 no problem.
Reviewed in the United States on November 2, 2023 by BillSa

Can't find a product?

Find it on Amazon first, then paste the link below.